A colloidal solution, i.e. a suspension of particles intermediate in size between ordinary molecules (as in a solution) and coarse particles (as in a suspension). A jelly-like sol is a gel.
A colloid in liquid suspension, resembling a solution.
State of a colloid system in which the dispersion medium or solvent forms a continuous phase in which the particles of the solute are dispersed, forming a fluid mass. It is called a hydrosol if the dispersion medium is a liquid and an aerosol if a gas.